Description : Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called
Last Answer : Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called A. ... B. hyaluronidase C. Androgamone D. Diastase.
Description : Assertion : Dark reactions of photosynthesis are temperauture -controlled processes. Reason : Most of the reactions are enzymatic in nature.
Last Answer : Assertion : Dark reactions of photosynthesis are temperauture -controlled processes. Reason : Most of the ... If both Assertion and Reason are false.
Description : Adaptation for approach of sperm of egg in mammals -
Last Answer : Adaptation for approach of sperm of egg in mammals - A. Sperm kept inactive till ejaculation B. Very ... C. Peristalsis of oviduct D. All the above
Description : In mammals , maturation of sperm take place at a temperature
Last Answer : In mammals , maturation of sperm take place at a temperature A. equal to that of body B. higher ... . lower than that of body D. at any temperature
Description : An acromion process is characteristically found in the (a) pelvic girdle of mammals (b) pectoral girdle of mammals (c) skull of frog (d) sperm of mammals.
Last Answer : (b) pectoral girdle of mammals
Description : At what point in a man's life cycle is his sperm most suitable for producing thriving offspring?
Last Answer : answer: In general, volume decreases with age as the prostate enlarges. This does not mean potency necessarily decreases, however. The greatest misconception about semen is that the amount of ejaculate fluid is ... Dr. Lowe. In fact, sperm count can be normal even in smaller volumes. Source
Description : In our society women are blamed for producing female children. Choose the correct answer for the sex-determination in humans. (a) Due to some defect like aspermia in man. (b) Due to the genetic make up of the ... . (c) Due to the genetic make up of the egg. (d) Due to some defect in the women.
Last Answer : (b) Due to the genetic make up of the particular sperm which fertilises the egg.
Description : What is the period of time when female mammals are producing mile?
Last Answer : Lactation
Description : In the chemistry of vision in mammals, the photosensitive substance is called (a) rhodopsin (b) melanin (c) sclerotin (d) retinol.
Last Answer : (a) rhodopsin
Description : Fertilizin is a chemical substance produced from (a) polar bodies (b) middle piece of sperm (c) mature eggs (d) acrosome.
Last Answer : (c) mature eggs
Description : Which one of the following characteristics is not shared by birds and mammals? (a) Viviparity (b) Warm blooded nature (c) Ossified endoskeleton (d) Breathing using lungs
Last Answer : (a) Viviparity
Description : The energy required to start an enzymatic reaction is called (A) Chemical energy (B) Metabolic energy (C) Activation energy (D) Potential energy
Last Answer : Answer : C
Description : Chemical reaction vs enzymatic reaction -Biology
Last Answer : answer:
Description : What is the enzymatic function of restriction enzymes? -Biology
Description : Enzymatic filters are used for removing
Last Answer : Enzymatic filters are used for removing A. Nitrogen pollutants B. Chloride pollutants C. Hydrocarbons D. Lead
Description : All living organisms retain the enzymatic machinery to partially oxidise glucose without the help of oxygen. This breakdown of glucose to pyruvic acid
Last Answer : All living organisms retain the enzymatic machinery to partially oxidise glucose without the help of oxygen ... of glucose to pyruvic acid is called.
Description : Feedback term refers to (A) Effect of substrate on rate of enzymatic reaction (B) Effect of end product on rate reaction (C) Effect of enzyme concentration on rate of reaction (D) Effect of external compound on rate of reaction
Last Answer : Answer : B
Description : A protein having both structural and enzymatic traits is (A) Myosin (B) Collagen (C) Trypsin (D) Actin
Last Answer : Answer : A
Description : When the velocity of an enzymatic reaction equals Vmax, substrate concentration is (A) Half of Km (B) Equal to Km (C) Twice the Km (D) Far above the Km
Last Answer : Answer : D
Description : The fatty acid synthase complex catalyses (A) 4 sequential enzymatic steps (B) 6 sequential enzymatic steps (C) 7 sequential enzymatic steps (D) 8 sequential enzymatic steps
Description : Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction
Description : The following ions help in enzymatic transfer of phosphate from ATP to pyruvic acid: (A) Sodium (B) Calcium (C) Magnesium (D) Potassium
Description : Consider the following statements associated with the germination of an angiospermous seed: (1) As the seed gets hydrated and germinates, enzymatic activity is increased (2) The respiration ... The increase in the respiratory rate continues till senescence (4) Rate of enzymatic activity decreases
Last Answer : Ans. ((b))
Description : Ribozyme is: (a) enzyme (b) RNA with enzymatic activity (c) Hormone (d) Protein
Description : How does facilitated diffusion present similarities with enzymatic chemical reactions ?
Last Answer : One of the main examples of facilitated transport is the entrance of glucose from the blood into cells. Glucose from blood binds to specific permeases (hexose-transporting permeases) present in the ... job is concluded the permease is not consumed and can perform successive other transports.
Description : Explain in brief about leukotrienes and prostaglandins Leukotrienes and prostaglandins are formed only when the mast cell undergo degranulation and enzymatic break down of phospholipids in the plasma membrane ?
Last Answer : The effects produced by them are more pronounced and long lasting than histamine. Leukotrienes mediate mucous production and bronchoconstriction. Prostaglandin D2 causes bronchoconstriction.
Description : The saliva pH is approximately 6.8. It is thus a slightly acid pH. Saliva lubricates the food bolus and initiates the enzymatic extracellular digestion of food. It also works as a buffer for the ... 's milk and in the mucosae of the intestine and airways) that protect the organism against pathogens.
Last Answer : What is the salivary digestive enzyme? Which type of food does it digest and into which smaller molecules does it transform the food?
Description : Chemical digestion is the series of enzymatic reactions to break macromolecules into smaller ones.
Last Answer : Which type of chemical reaction is the breaking of macromolecules into smaller ones that occurs in digestion? What are the enzymes that participate in this process called?
Description : Mechanical digestion is the fragmentation of food aided by specialized physical structures, such as teeth, previous to extracellullar digestion. The mechanical fragmentation of food helps digestive ... there are mandibles and chewing muscles to triturate food previous to the chemical digestion.
Last Answer : Concerning extracellular digestion what is meant by chemical digestion?
Description : Which factor is responsible for inhibition of enzymatic process during feedback? (a) Substrate (b) Enzymes (c) End product (d) Temperature
Last Answer : (c) End product
Description : The curve given below shows enzymatic activity in relation to three conditions (pH, temperature and substrate concentration). What do the two axes (X and Y) represent? X-axis ... (b) Temperature Enzyme activity (c) Substrate Enzymatic concentration activity (d) Enzymatic activity Temperature
Last Answer : (b) Temperature Enzyme activity
Description : Transition state structure of the substrate formed during an enzymatic reaction is (a) transient and unstable (b) permanent and stable (c) transient but stable (d) permanent but unstable.
Last Answer : (a) transient and unstable
Description : The function of a viral capsid is A.protection against the viral genome from physical and enzymatic destruction B.providing binding sites that enable the virus to attach to specific receptor sites on the host ... C.serving as a vehicle of transmission from one host to another D.all of the above
Last Answer : D.all of the above
Description : If the Keq for an enzymatic reaction is greater than 1, the reaction A- will be endergonic B- can not occur without the input of energy C- both (a) and (b) D- none of these
Last Answer : none of these
Description : During which step of cellular carcinogenesis do cellular changes exhibit increased malignant behavior? a) Progression During this third step, cells show a propensity to invade adjacent tissues and ... of cellular DNA. d) Prolongation No stage of cellular carcinogenesis is termed prolongation.
Last Answer : a) Progression During this third step, cells show a propensity to invade adjacent tissues and metastasize.
Description : An enzymatic beta-oxidation process a). Conjugation b). Reverse metabolism c). Translocation d). Metabolism
Last Answer : b). Reverse metabolism
Description : A receptor which itself has enzymatic property is: A. Insulin receptor B. Progesterone receptor C. Thyroxine receptor D. Glucagon receptor
Last Answer : A. Insulin receptor
Description : In the mammalian body, this element plays many important roles. Try to identify this element with the fewest number of clues. This element is required to insure the integrity and permeability of ... involved in blood coagulation and is the most important element of bone salt. Name this element.
Last Answer : ANSWER: CalciumÂ
Description : 1. Which substance found in blood which helps in cloting? 2. How can a major portion of the Constitution be amended? 3. What is the product of the time period of a wave and its frequency? 4. ... ? 20. Which region of northern India was not included in the empire of Ala-ud-din Khalji ?
Last Answer : Answer : 1. Fibrinogen 2. By two-thirds majority 3. Unity 4. Texas-Louisiana belt 5. Guptas 6. 22nd May, 1964 7. Rahi Masoom Raza 8. 52nd 9. Saudi Arabia 10. Andhra 11. Einstein 12. Dadabhai ... 15. Assam 16. 72 times 17. In times of Emergency 18. Increases 19. Folded and faulted region 20. Kashmir
Description : .Angiosperms have dominated the land flora primarily because of their (a) power of adaptability in diverse habitat (b) property of producing large number of seeds (c) nature of self pollination (d) domestication by man
Last Answer : (a) power of adaptability in diverse habitat
Description : Lysine rich Maize variety is
Last Answer : Lysine rich Maize variety is A. Protina B. Rattan C. Shakti D. All the above
Description : Buffering action of haemoglobin is mainly due to its (A) Glutamine residues (B) Arginine residues (C) Histidine residues (D) Lysine residues
Description : In pheochromocytoma, urine will have (A) FILGU (B) VMA (C) 5 HIAA (D) Lysine and Arginine
Description : In the B chain of insulin molecule, the Nterminal amino acid is (A) Proline (B) Threonine (C) Phenylalanine (D) Lysine
Description : Sulphur is made available to the body by the amino acids: (A) Cystine and methionine (B) Taurine and alanine (C) Proline and hydroxyproline (D) Arginine and lysine MINERAL METABOLISM 191
Description : The deficiency of copper decreases the activity of the enzyme: (A) Lysine oxidase (B) Lysine hydroxylase (C) Tyrosine oxidase (D) Proline hydroxylase
Description : Which of the following forms part of a coenzyme? (A) Zn2+ (B) Lipase (C) Vitamin B2 (D) Lysine
Description : Which of the following amino acid has been shown as one of the active site of phosphoglucomutase? (A) Lysine (B) Tyrosine (C) Serine (D) Histidine